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脉 冲 分析器 : 29 phrases in 8 subjects |
| Air defense | 1 |
| Earth sciences | 2 |
| Electronics | 7 |
| Geophysics | 2 |
| Nuclear and fusion power | 1 |
| Oil / petroleum | 4 |
| Oil processing plants | 1 |
| Technology | 11 |
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